Feature
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PhysicsHot Crystal
In seeming violation of one of the laws of physics, a new type of metal microstructure promises to lead to far more efficient incandescent light bulbs and also to boost the development of light-based microcircuits and heat-to-electricity generators.
By Peter Weiss -
EarthOn Thinning Ice
Although some of Earth's glaciers seem to be holding their own in the face of global warming, most of them are on the decline, many of them significantly.
By Sid Perkins -
Health & MedicineCheckmate for a Child-Killer?
If a new generation of vaccines pans out, the days of rotavirus, which kills at least 450,000 infants and children every year by causing severe diarrhea, may be numbered.